global soil organic carbon map
TRANSCRIPT
Global Soil Organic
Carbon MapRainer Baritz
Global Soil Partnership
Background Request from the SPI-UNCCD to ITPS to prepare a Global Soil
Organic Carbon map as a contribution to the SDG process (indicator 15.3.1).
Part of the ongoing activities to establish the Global Soil Information System under Pillar 4.
Need to empower member countries to develop their own national soil information using state of the art techniques/methods.
Crucial need to make SOC baseline available considering the dynamic nature of soils.
Where are SOC data needed?
IPCC AR, GHG (MRV) (AFOLU), INDC, REDD+
FAO STAT (agro-env indicators and UN statistics), Agriculture productivity
National Biodiversity Strategies and Action Plans (NBSAPs), Aichi Targets
UNFCCC/IPCC
UNCCD
UNCBD/IPBES
UN-FAOSTAT
SDG (2.4, 15.2, 15.3)
Rio+20
UN World Soil Charter Voluntary Guidelines for SSMStatus of the World’s Soil Resources ReportGlobal Soil information System and SoilSTAT
LDN target settingNational Action Programmes (NAPs)
GSP
What is the current status of spatial
information about SOC Harmonized World Soil Database (HWSD): mostly 1km,
(some parts coarser), with soil properties from a separate (and patchy) global soil profile data set.
ISRIC World Soil Profile data base
Batjes (2009)
Koechy et all. (2015)
SOC stock values [Pg]
Depth [cm]
0-30 30-100 0-100 0-200 0-300 >100 Accuracy
Batjes (1996) 1462-1548 2376-2456 WISE (4353 soil profiles) + DSMW
Global Soil Data Task Group (2000)
1550
Jobbagy and Jackson (2000) 1502 1993 2344 2721 soil profiles grouped by biome
Henry et al. (2009) 1598 2521 DSMW
Henry et al. (2009) 1850 HWSD
Hiederer et al. (2011) 1455 HWSD v1.1
Schlesinger (1997, 2013) 1500 2500
Scharlemann et al. (2014) 1461 (504-3000)
Review of publications 1951 and 2011
Shangguan et al. (2014) 1455 230 cm: 1923
DSMW
Koechy et al (2015) – HWSD 1062 adjusted BD for organic soils
Koechy et al. (2015) final 1325 3000
Stockmann et al. (2016) Change 2001-2009, 1 km, 0-10 cm 63,503 soil profiles
Spatial information about SOC: new
trends New trends based on digital soil mapping: soil grids based on
GlobalSoilMap.net specifications and ISRIC SoilGrids1km/250m Soil depth curves Spatial uncertainties
SOC [‰], topsoil (0–5cm).
110,000 soil profiles: partly accessible through WorldSoilProfiles.org data portal
Progress at national level
Many recent national and regional SOC maps were developed; (at least ca. 70 publications from 50 countries), with improved national data bases and upscaling models
Denmark 45,000 point samples (2,050, 34k)Poland 50,000 point samples (15,400, 247k)Slovakia 16,636 soil profiles (2,400, 39k)
Examples for data used at national level:[4x4 km] [1 km2]
Global Soil Information System
GSOCmap: national SOC mapping
First test round of the Global Soil Information system following a bottom-up approach.
GSOC Map: National contact points and
INSII
Status March 2017
GSOC Map: Capacity development
GSP Trainings
GSOCmap Specifications
Guideline: detailed specifications1 km grid (global raster)0-30 cm, forest floor and peat <100Metadata (input data, upscaling) Spatial mapping: conventional upscaling
and DSMUncertainties (quantitative, qualitative)Cookbook: detailed methods and working
steps, especially data preparation and DSM
GSOCmap considerations
Coordination and review: Intergovernmental Technical Panel on Soils (ITPS)
Framework: International Network of Soil Information Institutions (INSII).
GSOCmap first product of the Global Soil Information System of the Global Soil Partnership
GSOCmap: first delivery 5th of December World Soil Day.2020
GSOCmap is not just a map!It supports the development and
empowerment of national capacities to build their National Soil
Information Systems.